Remote ischaemic preconditioning and survival in noncardiac surgery: a meta-analysis of randomised trials.
- Design
- Design 9 of 10
- Novelty
- Novelty 7 of 10
- Journal
- Journal 9 of 10
- Clinical
- Clinical 8 of 10
Summary
Across 72 RCTs in noncardiac surgery, RIPC was associated with lower mortality (RR 0.74) and reduced postoperative stroke and shorter hospital stay versus controls. These findings support RIPC as a low-cost, noninvasive strategy for perioperative organ protection and justify a definitive multicenter RCT.
Key Findings
- Meta-analysis of 72 RCTs (n=7457) in noncardiac surgery settings.
- Mortality reduced with RIPC versus control (88/2122 vs 102/1767; RR 0.74, 95% CI 0.57–0.98; P=0.03).
- Bayesian analysis indicated a high probability of mortality benefit (RR<1).
- Secondary outcomes showed reduced postoperative stroke and shorter hospital stay.
Clinical Implications
Consider implementing standardized RIPC protocols in high-risk noncardiac surgeries as an adjunct to enhance organ protection, while awaiting confirmatory multicenter trials.
Why It Matters
First meta-analysis to link RIPC with survival benefit in noncardiac surgery with consistent secondary improvements. It may shift practice toward routine perioperative RIPC protocols.
Limitations
- Mortality data available in only 28 of 72 RCTs; potential reporting bias.
- Heterogeneity in RIPC protocols and surgical populations; possible small-study effects.
Future Directions
A large, pragmatic multicenter RCT with standardized RIPC protocols, patient-centered outcomes, and cost-effectiveness analysis is warranted.
Study Information
- Study Type
- Meta-analysis
- Research Domain
- Treatment
- Evidence Level
- I - Meta-analysis of randomized controlled trials in noncardiac surgery.
- Study Design
- OTHER